When we run an application, its icon would appear on the launcher and so we can call it back after minimize it. Specially, a little triangle would keep appearing near the icon, meaning this application is running now.
However, when I open a Libreoffice file, the revelance icon doesn't appear on the launcher! What's more, when I minimize Libreoffice, I couldn't find it even through "Alt+Tab". I've tried Libreoffice 3.4 and 3.3, but the problem exists all the same.
Look, here is Libreoffice Calc running, and no icon appears on the launcher. If I minimize it, it is impossible to call it back.